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No. 6|9,322. Patented Feb. l4`V 1899. T. J. LINDSAY. BICYCLE FRAME.

(Application med un. 15, 189s.)

(No Mude.)

g Thomas lLiufy,

UNITED STATES PATENT OFFICE.

THOMAS J. LINDSAY, OF LAFAYETTE, INDIANA, ASSIGNOR OF ONE-HALF TODIETRICH H. LOHMAN, OF SAME PLACE.

BICYCLE-FRAM E.

SPECIFICATION forming part of Letters Patent No. 619,322, dated February14, 1899.

Application filed January l5, 1898. Serial No. 666,754. (No model.)

To all wir/ont zit 11i/ty concern:

Be it known that l, THOMAS J. LINDSAY, a citizen of the United States,residing at Lafayette, in the county of Tippecanoe and State of Indiana,have invented certain new and useful Improvements in Bicycle-Frames, ofwhich the following is a specification.

The principal object of my present invention is to provide in theconstruction of a bicycle-frame an inclosing casing for the chain, whichshall be embodied in and form a part of said frame; and it consists inthe construction and arrangement of parts whereby this object isaccomplished, hereinafter` more particularly described and claimed.

Referring to the accompanying drawings, which are made a part hereof andon which similar letters and numerals of reference indicate similarparts, Figure 1 is a side elevation of a bicycle embodying my presentinvention; Fig. 2, a detail side elevation of that portion of the framewherein my said invention principally resides,certain portions thereofbeing shown in section; Fig. 3, a view, partially in top plan andpartially in horizontal section, of the hanger and immediately adjacentparts as seen from the dotted line 3 3 in Fig. 2; and Fig. 4, atransverse sectional view as seen from the dotted line 4. 4 in Fig. 2.

The bicycle illustrated in the drawings is that which embodies a certaindriving-gear formerly invented by me 5 but, as will be readilyunderstood, itis also applicable to the ordinary or any other desiredgearing and only requires to adapt it thereto slight changes in formwithout material difference in construction.

As above indicated, the frame in its general construction andarrangement is or may be substantially of any form desired. The hangerA, however, which is carried by the ordinary frame members l and 2, hastwo tubular projections a, extending rearwardly to- Ward the hub of therear wheel, and to these projections the forward ends of two tubes B Bare connected. These tubes not only form a portion of the frame, butalso the horizontal portions of an inclosing casing for the chain. Theconstruction and arrangement of the gearing and its relation to theframe and casing parts are illustrated in Fig. 3. The ordinary framemember 3 has a structure C upon its `lower end, which is rigid therewithand forms a part of the frame, and has two tubular projections c c, towhich the other ends of the tubes B B are connected, as best shown inFig. 2. A part C2 is mounted in the structure C, (on the opposite sidethereof to the projections c c, which receive the tubes B B,) and saidpart C2 is capable of adjustment telescopically relatively to said partC. Upon the outer end of the structure O2 is a cap C', which covers theotherwise open space and is held in place by screws c. The end of theshaft of the rear wheel passes through openings in the sides of the partC2, and when said shaft is adj usted by means ofthe set-screws sinadjusting the tension of the chain the part C2, because of itstelescopic character, is also moved correspondingly. The hanger A has aplate A', which is provided with ears ct', and these extend over theedge of the hanger A and are secured to said hanger by screws 0,2.

As will be readily seen, in my construction the tubes B not only form aportion of the frame of the bicycle, but also constitute an inclosingcasing for the chain. This arrangement produces a very strong, rigid,and durable structure and utilizes the chain-inclosing casing as a partof the frame itself and in a way which gives added strength and rigidityto the frame as a whole and particularly to that portion upon which thestrain of the propelling power comes.

Having thus fully described my said invention, what I claim as new, anddesire to secure by Letters Patent, is

The combination, in a bicycle-frame, of the members l, 2 and 3, thehanger and housing A having the projecting tubular portions a, a, theplate A' having the ears a2, by which it is connected to said hanger,the structure C also forming a housing secured to the member 3, andhaving the tubular projections c, c, on its front side, the caprCsecured over the open rear side of the part C2, said part C2telescopically mounted in the rear end of the part C, and the tubes Bsecured in and cen,- hand and sealwagtlndianapolis, 11111113442@- thisnecting the p1'0]`ecj;i 11g itubu'lgavrfpQ-rtiogns a, a, lQlhedty nf:Ian-nary, jl.

and c c' of Athe-llafnggers A afndC, -Whereby a rigid 7fratnne issecured and a chain-casing THOMAS J LINDSAY [L S'] 5 provided capable ofready adjustment, -sub- Witnesses:

stantially as set forth. CHESTER BRADFORD,

In .witness whereof kLhalve:hereuntossetmy lJ 4ALSH.

